title: The benefit of evolving a larger brain: big-brained guppies perform better in a cognitive task.
abstract: •We previously selected for large and small brain size in guppies.•Large-brained females outperformed small-brained females in a learning task.•Healy and Rowe challenged our interpretations of larger brains = better learning.•Here we argue why we think they are mistaken.
authors.affiliation: Animal Ecology, Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden.
authors.forename: Alexander
authors.initials: A
authors.lastname: Kotrschal
authors.forename: Björn
authors.initials: B
authors.lastname: Rogell
authors.forename: Andreas
authors.initials: A
authors.lastname: Bundsen
authors.forename: Beatrice
authors.initials: B
authors.lastname: Svensson
authors.forename: Susanne
authors.initials: S
authors.lastname: Zajitschek
authors.forename: Ioana
authors.initials: I
authors.lastname: Brännström
authors.forename: Simone
authors.initials: S
authors.lastname: Immler
authors.forename: Alexei A
authors.initials: AA
authors.lastname: Maklakov
authors.forename: Niclas
authors.initials: N
authors.lastname: Kolm
keywords: Poecilia reticulata; artificial selection; brain size; cognition; guppy; learning